JPH08241083A - Musical tone synthesizer - Google Patents

Abstract

PURPOSE: To make it possible to express musical instrument tones approximate to actual timbre changes by solving the problem that the expression of the timbre changes meeting the angles of blow to a mouthpiece is impossible and which is the characteristic of the playing expression of the flute-like musical instrument tones, in a musical tone synthesizer to be used for various kinds of electronic musical instruments, such as synthesizers and electronic keyboards. CONSTITUTION: The waveform data outputted from a waveform data generating section 11 is delayed by half the period of the basic frequency of the musical tones to be outputted in a delay section 12 and is further processed to desired data by the control data from a timbre control section 16 for executing timbre control according to the angle of blowing to the mouthpiece and the interval to be outputted in a filter section 13 and a level control section 14. Further, this data is subtracted from the output data of a waveform data generating section 11 in a subtraction section 15. The timber changes to generate level differences of odd order and even order according to the angles of blow to the mouthpiece which are the characteristics of the flute-like musical instrument tones are thereby obtd.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone synthesizing device for forming musical tone waveforms, which is used in electronic musical instruments such as synthesizers, electronic keyboards and electronic pianos for outputting various musical instrument sounds.

[0002]

2. Description of the Related Art In recent years, due to the progress of digital technology, a large number of musical tone synthesizers for electronic musical instruments to which a digital circuit is applied have been developed, and the musical tone quality is remarkably improved. As such a technique, for example, Japanese Patent Laid-Open No. 62-10
There is one disclosed in No. 9093.

The above-mentioned musical tone synthesizer will be described below with reference to the drawings. FIG. 10 is a block diagram of a conventional tone synthesizer. In FIG. 10, 101 is a drive data generation unit generated by reading the drive data stored in advance, 102 is a delay unit that delays the data for a predetermined time, 103 is the addition of the drive data and the data output from the delay unit 102. Adder unit 104 and delay unit 10
2 is a comb filter in which 2 and the adder 103 are configured in a closed loop.

The operation of the conventional tone synthesizing apparatus configured as described above will be described below.

The drive data generation unit 101 outputs drive data corresponding to vibrations (eg, force applied to a string by a finger when repelling a string) obtained when driving a resonance part (for example, a pipe or a string) of a musical instrument. Input to the comb filter 104. The comb filter 104 is a circuit corresponding to the resonance part (tube or string) of the musical instrument, and acts as a comb filter that forms a resonance peak at an integer harmonic with a frequency corresponding to the delay stage number j of the delay part 102 as the first-order component. , Get the desired composite data.

The delay unit 102 uses the read / write memory as a so-called ring memory, and if the write address precedes the read address of the read / write memory by m stages, it functions as a delay unit of m stages. Since the method of configuring the ring memory is generally known, its explanation is omitted. The drive data can be obtained by convoluting the original sound of the musical instrument with the inverse characteristic of the comb filter 104.

That is, the drive data is input to the comb filter 104, and the drive data circulates in the comb filter 104 to synthesize the musical sound data.

[0008]

However, in the above-mentioned conventional configuration, although the comb filter 104 can uniformly control the level of the integer harmonics of the fundamental frequency of the synthesized data, the level of the odd harmonics is made constant. Since it is not possible to control the level of only even-order harmonics, for example, a change in timbre depending on the angle at which the instrument is blown, which is a feature of musical expression of flute-type instrumental sounds ("Exploring the timbre of musical instruments," Yoshinori Ando Author, Chuo Koronsha, 1978, p130-p137
See) cannot be realized.

In addition, like oboe and bassoon, a musical tone having a frequency spectrum structure having valleys in an integer multiple frequency peculiar to an instrument is expressed, or depending on the type of the instrument,
It is not possible to change the frequency spectrum structure.

Further, the frequency spectrum structure changes with the passage of time, and it is not possible to express a musical tone having a rich sense of modulation that cannot be expressed by a change in the pitch of the musical tone.

Further, in the stringed instrument, there are various problems in that it is not possible to express a subtle change in the tone color caused by the subtle deviation of the performance position of the string during performance.

The present invention solves the above-mentioned conventional problems, and is a characteristic of a flute-type musical instrument sound, that is, a timbre change according to the blowing angle to the mouth (level control of even-order overtones).
It is an object of the present invention to provide a musical sound synthesizer capable of realizing the above.

Further, there is provided a musical tone synthesizing device capable of expressing a musical tone having a frequency spectrum structure having valleys at an integer multiple frequency peculiar to a musical instrument and varying the frequency spectrum structure according to the type of the musical instrument. The purpose is to do.

It is another object of the present invention to provide a musical tone synthesizing device for generating a musical tone having a rich sense of modulation that cannot be expressed by a change in the musical tone pitch because the frequency spectrum structure changes over time.

It is another object of the present invention to provide a musical tone synthesizing device which expresses a subtle change in tone color caused by a slight deviation of the playing position of a string in a stringed instrument.

[0016]

In order to achieve this object, a musical tone synthesizing apparatus according to a first aspect of the present invention comprises a waveform data generating section for generating waveform data and a waveform data output from the waveform data generating section. On the other hand, a delay unit that delays a half cycle of the fundamental frequency, a filter unit that suppresses high frequency components in the delayed waveform data, a level control unit that controls the level of the output of the filter unit, and a waveform A subtraction unit that subtracts the output data of the level control unit from the output data of the data generation unit, and a tone color control unit that sets control data for the filter unit and level data for the level control unit in response to a tone color change request. It has a different configuration.

A musical sound synthesizing apparatus according to a second aspect of the present invention comprises a waveform data generating section for generating waveform data, a delay section for delaying the waveform data output from the waveform data generating section,
A subtracter that subtracts the output data of the delay unit from the output data of the waveform data generator, and sets the amount of delay performed by the delay unit according to the type of musical instrument to be output and the pitch to be output, and instructs the delay unit. And a delay control unit for controlling the delay.

A musical sound synthesizer according to a third aspect of the present invention comprises a waveform data generating section for generating waveform data, a delay section for delaying the waveform data output from the waveform data generating section,
A configuration is provided that includes a subtraction unit that subtracts the output data of the delay unit from the output data of the waveform data generation unit, and a delay modulation unit that instructs the delay unit the amount of delay that has been modulated in a constant cycle over time. .

According to a fourth aspect of the musical tone synthesizing apparatus of the present invention, the waveform data generating section for generating the waveform data and the waveform data output from the waveform data generating section are randomly input within a certain range. A random delay unit that delays the delay amount and a subtraction unit that subtracts the output data of the delay unit from the output data of the waveform data generation unit are provided.

[0020]

According to the structure of the first aspect, the waveform data output from the waveform data generating section is delayed by a half cycle of the fundamental frequency of the musical sound to be output in the delay section, and further processed into a desired frequency characteristic in the filter section. The level is controlled by the level controller and output. This output data is subtracted from the output data of the waveform data generator in the subtractor and output as musical tone data. At this time, the tone color control unit outputs the control data in the filter unit and the level data in the level control unit according to the blowing angle of the singing mouth and the pitch of the musical sound to be output. It is possible to realize a tone color change according to the blowing angle.

According to the second aspect of the invention, the waveform data output from the waveform data generator is delayed by a desired delay amount in the delay unit, and then subtracted from the output data of the waveform data generator in the subtractor. Although it is output as musical tone data, in the delay control unit that controls the delay amount at that time, the delay amount is set according to the musical instrument type and pitch of the musical tone to be output. The optimum frequency spectrum structure can be changed.

According to the structure of claim 3, the waveform data output from the waveform data generator is delayed by a desired delay amount in the delay unit, and then subtracted from the output data of the waveform data generator in the subtractor. It is output as musical sound data, but at that time, the delay modulation unit indicates to the delay unit the amount of delay modulated at a constant cycle over time, so as the output musical sound data, the frequency spectrum gradually increases over time. The structure changes, and it is possible to obtain data with a rich sense of modulation that cannot be expressed by changing the pitch of a musical tone.

According to the structure of claim 4, the waveform data output from the waveform data generator is delayed by a random delay amount within a certain range for each waveform input in the random delay unit, and then the subtraction unit. In (1), the tone data is subtracted from the output data of the waveform data generation unit and is output as musical tone data. Therefore, it is possible to represent a timbre change caused by a slight shift in the playing position of the string when playing on a stringed instrument.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A musical tone synthesizer according to an embodiment of the present invention will be described below with reference to the drawings.

(Embodiment 1) A first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the arrangement of a musical sound synthesizer according to the first embodiment. In FIG. 1, 10 is an input unit such as a keyboard, a modulation wheel, and a switch, 11 is a waveform data generation unit, 12 is a delay unit that delays data for a predetermined time, 13 is a filter unit that low-passes data, and 14 is A level control unit for performing a desired level control, a subtraction unit 15 for subtracting the data generated by the level control unit 14 from the data generated by the waveform data generation unit 11, and a reference numeral 16 for the filter unit 13 in response to a timbre change request.
This is a tone color control unit for setting the control data of the characteristics of the above and the level data for the level control unit 14.

The operation of the musical tone synthesizer configured as above will be described. When the information of the musical sound to be output is input to the input unit 10, the input unit 10 outputs the data necessary for each transmission line connected to the waveform data generation unit 11, the delay unit 12, and the tone color control unit 16. First, basic waveform data such as musical tone types, pitches, and touches are output to the waveform data generator 11, and pitch-related data are output to the delay unit 12. In addition, the tone color control unit 16
In response to this, data regarding the tone color of the output tone such as the type of tone and the angle data of the singing mouth is output, and the tone color control unit 16 receiving the data outputs the control data of the filter in the filter unit 13 according to these data. And the level control data in the level control unit 14 is sent to each transmission line.

The waveform data generator 11 generates waveform data corresponding to the data on the tone type, pitch and touch output from the input unit 10. This waveform data generator
It may be considered as the musical tone synthesizer itself described in this conventional example, or the data stored in advance in the waveform memory may be read out at a speed corresponding to a desired pitch like the drive data generation section of this conventional example. It may be. The delay unit 12 receives the output data from the waveform data generation unit 11 from the input unit 1
With reference to the pitch-related data received from 0, a half cycle of the fundamental frequency of the waveform data is delayed. This delay unit can be realized with a configuration equivalent to that of the delay unit of the conventional example. The filter unit 13 is a low-pass filter, and processes the data delayed by the delay unit 12 with a filter coefficient sent from the timbre control unit 16 into a desired frequency characteristic and outputs it. An example of the low pass filter is shown in FIG. 17 is a delay device for delaying data by 1 point, 18 is a coefficient multiplier, 19
Is an adder, and a desired frequency characteristic can be obtained by appropriately determining each multiplication coefficient of the coefficient multiplier 18. The level control unit 14 controls the output data from the filter unit 13 with the data transmitted from the tone color control unit 16.

The data processed up to the output point of the level control unit 14 is subtracted from the output data of the waveform data generation unit 11 in the subtraction unit 15 and output as tone data.

Next, the frequency characteristics of the musical sound data will be described. First, the filter unit 1
3 shows changes in the frequency characteristics of the musical tone when the 3 and the level control unit 14 are set to the through state. FIG. 3A schematically shows the frequency characteristics of the waveform data generated by the waveform data generator 11. The vertical axis represents the spectrum amplitude value, and the horizontal axis represents the order. In this case, the frequency characteristic of the output waveform of the subtraction unit 15 is as shown by the solid line portion in FIG. The wavy line shows the characteristic difference from (A). That is, since the delay unit 12 delays and subtracts a half cycle of the fundamental frequency, the characteristic changes with a dip in the even harmonics.

FIG. 4 shows a filter section 13 and a level control section 14.
The change of the frequency characteristic of the musical sound when the effect of is included is shown.
The meanings of (A) and (B) are the same as in FIG. The even-order dips are not so severe here. The degree of this even-order drop can be controlled by the level control value in the level control unit 14. In the above-mentioned document, it is described that there is an odd-order and even-order spectral amplitude difference of about 25 decibels at the blowing angle at the mouth of the flute. ) And the control level are set by the conversion table having the characteristics shown in FIG. 5, for example. In FIG. 5, the vertical axis represents the control level value and the horizontal axis represents the eccentricity value. It is also known that the control level width changes depending on the output pitch, and this point can be realized if the range on the vertical axis in FIG. 5 changes according to the output pitch.

Further, in FIG. 4B, the influence of the level control is only up to the 8th order, but this is the influence of the filter characteristic of the filter unit 13. Generally, the influence of this eccentricity is conspicuous in the low order in the flute and the like. That is, the influence range of the level control can be controlled by the filter control data output by the tone color control section.

As described above, the musical tone synthesizing apparatus of the present invention can obtain a desired timbre change in accordance with the blowing angle of the flute-type musical instrument sound into the song mouth, which is a characteristic of the musical performance expression.

In the present embodiment, the timbre change by the timbre control unit 16 is written only according to the blowing angle of the singing mouth. It goes without saying that it can be used for tone color control for producing a musical sound.

The delay unit 12, the filter unit 13, and the level control unit 14 do not have to be arranged in the order of this embodiment, and they may be arranged in any order. The point is that the subtraction unit 15 and the tone color control unit 16 are used. It is necessary that the requested tone color waveform data be delayed by a predetermined delay amount.

(Second Embodiment) A second embodiment of the present invention will be described with reference to the drawings.

FIG. 6 is a block diagram showing the arrangement of a musical sound synthesizer according to the second embodiment. In FIG. 6, 20 is an input unit such as a keyboard and a switch, 21 is a waveform data generation unit, 22 is a delay unit that delays data for a predetermined time, and 23.
Is a delay control unit that controls how the delay unit 22 delays in accordance with the type of musical sound to be output, and 24 is a delay unit 22 based on the data generated by the waveform data generation unit 21.
The subtraction unit subtracts the generated data.

The operation of the musical sound synthesizing apparatus configured as described above will be described. When the information of the musical sound to be output is input to the input unit 20, the input unit 20 outputs the data necessary for the transmission path connected to the waveform data generation unit 21 and the delay control unit 23. First, the waveform data generator 21 is provided with data regarding basic tone output such as tone type, pitch, and touch, and the delay controller 23 is provided with data such as the type and pitch of the musical tone to be output and the performance of the instrument. Sends data related to expressions.

The waveform data generator 21 generates waveform data corresponding to the data about the tone type, pitch, and touch output from the input unit 20. This waveform data generator
This is the same as that shown in the first embodiment. The delay control unit 23 determines the delay amount to be delayed by the delay unit 22 from the data received from the input unit 20 and sends it to the delay unit 22 (details will be described later). The delay unit 22 delays the waveform data generated by the waveform data generation unit 21 by the delay amount sent from the delay control unit 23 and outputs the delayed waveform data. The data output from the delay unit 22 is subtracted from the output data of the waveform data generation unit 21 in the subtraction unit 24 and output as tone data.

Next, the control method of the delay control section 23 will be described. The delay control unit 23 determines the delay amount in the delay unit 22 according to the musical instrument type of the musical sound output by the waveform data generation unit 21. For example, in the case of a flute-type musical instrument, as shown in the first embodiment, the delay unit 22 delays a half cycle of the fundamental frequency of the musical tone with reference to the pitch data of the musical tone to be output. Give instructions. Also, consider a case where a delay amount smaller than the half cycle of the fundamental frequency is instructed. For example, in the case of a delay amount of 1/4 cycle, it becomes a harmonic structure having a dip at a multiple of 4 and this is the frequency structure when driving the string supporting both ends of a stringed instrument at 25% from the end. It is close. The relationship between the drive position and the delay amount at this time is shown in the following equation.

DT = T.multidot.x / 100 where DT is the delay amount, T is the number of points in one cycle, and x is the driving position (%). In this way, the tone color change due to the difference in the driving position of the stringed instrument can also be expressed. Therefore, in the case of a musical instrument that drives strings, the delay unit 22 is instructed of the delay amount calculated from the drive position data and the pitch data. Also, in the case of oboe and bassoon, the fundamental frequency is determined by the instrument, and a dip (formant) is formed at an integer multiple frequency position to create the musical sound of the instrument. in this case,
The delay amount instructed by the delay control unit 23 to the delay unit 22 is determined only by the type of musical instrument. From the above, the delay control unit 23
Chooses a pitch-dependent type in which the amount of delay changes depending on the pitch of the musical tone, or a fixed type in which the amount of delay is determined by the type of musical instrument regardless of the pitch of the musical tone. You can also

As described above, the tone synthesizer of the present invention can obtain the optimum frequency spectrum structure for the musical instrument by changing the method of calculating the delay amount according to the type of musical instrument.

Although the output of the delay unit 22 is directly input to the subtraction unit 24 in this embodiment, the filter unit and the level control unit are provided between the delay unit and the subtraction unit as in the first embodiment. It goes without saying that it may be configured to have a.

(Embodiment 3) A third embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a block diagram showing the configuration of a musical sound synthesizer in the third embodiment. In FIG. 7, reference numeral 30 is an input unit such as a keyboard or switch, 31 is a waveform data generation unit, 32 is a delay unit that delays data for a predetermined time, and 33 is a delay modulation unit that changes the delay amount of the delay unit 32 in a constant cycle. , 34 are subtraction units for subtracting the data generated by the delay unit 32 from the data generated by the waveform data generation unit 31.

The operation of the musical tone synthesizer configured as above will be described. When the information of the musical sound to be output is input to the input unit 30, the input unit 30 outputs the data necessary for the transmission path connected to the waveform data generation unit 31 and the delay modulation unit 33. First, the waveform data generator 31 is provided with data regarding basic tone output such as tone type, tone pitch, and touch, and the delay modulator 33 is provided with tone type, tone pitch,
The type of modulation to be performed, speed, modulation width, etc. are output.

The waveform data generation unit 31 generates waveform data corresponding to the data regarding the tone type, pitch and touch output from the input unit 30. This waveform data generator
This is the same as that shown in the first embodiment. The delay modulator 33 determines the delay amount to be delayed by the delay unit 32 from the data received from the input unit 30 and sends it to the delay unit 32 (details will be described later). The delay unit 32 delays the waveform data generated by the waveform data generation unit 31 by the delay amount transmitted from the delay modulation unit 33 and outputs the delayed waveform data. The data output from the delay unit 32 is subtracted from the output data of the waveform data generation unit 31 in the subtraction unit 34 and output as tone data.

Next, the delay modulator 33 will be described. The delay modulator 33 is a block that outputs to the delay unit 32 a delay amount that is modulated with time according to input information. An example of the modulation is shown in FIG. Here, the vertical axis represents the delay amount and the horizontal axis represents time. Assuming that the modulation width of the delay on the vertical axis is 50% to 0% in the expression of the driving position in the case of string driving in the second embodiment, when 50%, the harmonic overtone based on the second order ( It has a dip in the (even-order) position and its reference overtone becomes higher as it goes to 0%.
This effect is a modulation effect peculiar to the synthesizer, PWM
This is a change in frequency characteristics equivalent to (Pulse Width Modulation), resulting in a sound with a very complex modulation feeling ("Introduction to Synthesizers for Everyone" by Hiroshi Suzuki, Ongaku no Tomosha, 1977, p81, p90). That is, with this configuration, any waveform data generated by the waveform data generator 31 can be modulated. Further, it is possible to change to a desired sense of modulation by changing the depth and speed of modulation.

As described above, according to this structure, the frequency spectrum structure can be changed with the passage of time, and a musical tone having a rich sense of modulation that cannot be expressed by a change in the pitch of the musical tone can be generated.

The delay modulator 33 may include the contents of the delay controller 23 in the second embodiment. That is, only the modulation centering on the position of 25% is described here, but it is also possible to obtain a desired delay modulation centering on the center of the modulation as the position of the delay amount determined in the second embodiment. Conceivable.

(Embodiment 4) A fourth embodiment of the present invention will be described with reference to the drawings.

FIG. 9 is a block diagram showing the arrangement of a musical sound synthesizer according to the fourth embodiment. In FIG. 9, reference numeral 40 is an input unit such as a keyboard or switch, 41 is a waveform data generation unit, 42 is a random delay unit that delays the data for a predetermined time, and 43 is a random delay unit 42 from the data generated by the waveform data generation unit 41. The subtraction unit subtracts the generated data.

The operation of the musical tone synthesizing apparatus configured as described above will be described. When the information of the musical sound to be output is input to the input unit 40, the input unit 40 outputs the data necessary for the transmission path connected to the waveform data generation unit 41 and the random delay unit 42. First, data regarding basic tone output such as tone type, tone pitch, and touch is output to the waveform data generation unit 41, and a delay amount setting range and the like are output to the random delay unit 42.

The waveform data generation unit 41 generates waveform data corresponding to the data regarding the tone type, pitch, and touch output from the input unit 40. This waveform data generator
This is the same as that shown in the first embodiment. The random delay unit 42 randomly sets a delay amount within the range of the delay amount setting range received from the input unit 40, delays the waveform data generated from the waveform data generation unit 41 by the delay amount, and outputs the delayed waveform data. To do. The data output from the random delay section 42 is subtracted from the output data of the waveform data generation section 41 in the subtraction section 43 and output as tone data.

The musical tone data thus generated can represent, for example, a delicate timbre difference due to a change in the driving position of a string that slightly changes during performance of a stringed instrument or a difference in stroke between a plurality of strings.

[0055]

As described above, according to the present invention, the waveform data generating section for generating the waveform data and the delay section for delaying the waveform data output from the waveform data generating section by a half cycle of the fundamental frequency thereof are provided. , A filter unit that suppresses high frequency components in the delayed waveform data, a level control unit that controls the level of the output of the filter unit, and an output data of the level control unit that compares the output data of the waveform data generation unit. By providing a subtraction unit for subtraction and a tone color control unit for setting control data for the filter unit and level data for the level control unit in response to a request for tone color change, this is a characteristic of musical expression of flute instrument sounds. Thus, it is possible to realize an excellent musical sound synthesizer capable of realizing the change of the even harmonics according to the blowing angle of the mouthpiece.

Further, the waveform data generating section for generating the waveform data, the delay section for delaying the waveform data output from the waveform data generating section, and the output data of the delay section for the output data of the waveform data generating section By providing a subtraction unit for subtraction, and a delay control unit for setting the delay amount performed by the delay unit according to the type of musical instrument to be output and the pitch to be output and instructing the delay unit Representing a musical sound with a frequency spectrum structure that has valleys at doubled frequencies,
It is possible to realize an excellent musical sound synthesizer capable of changing the frequency spectrum structure according to the type of musical instrument.

Further, the waveform data generating section for generating the waveform data, the delay section for delaying the waveform data output from the waveform data generating section, and the output data of the delay section for the output data of the waveform data generating section By providing a subtraction unit for subtraction and a delay modulation unit for instructing the delay unit to modulate the delay amount that has been modulated in a fixed cycle with the passage of time, the frequency spectrum structure changes with the passage of time, and is expressed by the pitch change of musical tones. It is possible to realize an excellent musical tone synthesizer capable of generating musical tones with a rich sense of modulation that cannot be achieved.

Further, the waveform data generating section for generating the waveform data, and the random delay section for delaying the waveform data output from the waveform data generating section by a random delay amount within a certain range for each input waveform data. By providing a subtraction unit that subtracts the output data of the delay unit from the output data of the waveform data generation unit, it is possible to express a subtle change in the timbre that occurs when the playing position of the string is slightly deviated when playing a stringed instrument. It is possible to realize a musical sound synthesizer.

[Brief description of drawings]

FIG. 1 is a block diagram of a musical sound synthesizer according to a first embodiment of the present invention.

FIG. 2 is a block diagram of a filter according to the first embodiment of the present invention.

FIG. 3 is an explanatory diagram showing changes in frequency characteristics of musical sound data when the filter unit and the level control unit are set to a through state in the first embodiment of the present invention.

FIG. 4 is an explanatory diagram showing changes in frequency characteristics of musical tone data when a filter unit and a level control unit are taken into consideration in the first embodiment of the present invention.

FIG. 5: Relationship diagram between eccentricity value and control level value during flute performance

FIG. 6 is a block diagram of a musical sound synthesizer in a second embodiment of the present invention.

FIG. 7 is a block diagram of a musical sound synthesizer according to a third embodiment of the present invention.

FIG. 8 is a diagram showing the relationship between the delay amount and time in the delay modulator of the third embodiment of the present invention.

FIG. 9 is a block diagram of a musical sound synthesizer according to a fourth embodiment of the present invention.

FIG. 10 is a block diagram of a conventional musical sound synthesizer.

[Explanation of symbols]

 10 input section 11 waveform data generating section 12 delay section 13 filter section 14 level control section 15 subtraction section 16 tone color control section

Claims (4)

[Claims] 1. A waveform data generator that generates waveform data, a delay unit that delays the waveform data output from the waveform data generator by a half cycle of the fundamental frequency, and a waveform data that has been delayed. A filter section that suppresses high-frequency components, a level control section that performs level control on the output of the filter section, a subtraction section that subtracts the output data of the level control section from the output data of the waveform data generation section, and a tone color change And a tone color control section for setting the control data for the filter section and the level data for the level control section in accordance with the above requirement. 2. A waveform data generating section for generating waveform data, a delay section for delaying the waveform data output from the waveform data generating section, and output data of the delay section for the output data of the waveform data generating section. A tone synthesis apparatus comprising a subtraction unit for subtraction, and a delay control unit for setting a delay amount performed by a delay unit according to a musical instrument type to be output and a pitch to be output and instructing the delay unit. 3. A waveform data generating section for generating waveform data, a delay section for delaying waveform data output from the waveform data generating section, and output data of the delay section for output data of the waveform data generating section. A tone synthesis apparatus comprising a subtraction unit for subtraction, and a delay modulation unit for instructing the delay unit of a delay amount modulated in a constant cycle over time. 4. A waveform data generator that generates waveform data, and a random delay unit that delays a waveform data output from the waveform data generator by a random delay amount within a fixed range for each waveform data input. And a subtraction unit for subtracting the output data of the delay unit from the output data of the waveform data generation unit.